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git.ipfire.org Git - thirdparty/systemd.git/blob - src/basic/path-util.h
1 /* SPDX-License-Identifier: LGPL-2.1+ */
9 #include "string-util.h"
11 #include "time-util.h"
13 #define PATH_SPLIT_SBIN_BIN(x) x "sbin:" x "bin"
14 #define PATH_SPLIT_SBIN_BIN_NULSTR(x) x "sbin\0" x "bin\0"
16 #define PATH_NORMAL_SBIN_BIN(x) x "bin"
17 #define PATH_NORMAL_SBIN_BIN_NULSTR(x) x "bin\0"
20 # define PATH_SBIN_BIN(x) PATH_SPLIT_SBIN_BIN(x)
21 # define PATH_SBIN_BIN_NULSTR(x) PATH_SPLIT_SBIN_BIN_NULSTR(x)
23 # define PATH_SBIN_BIN(x) PATH_NORMAL_SBIN_BIN(x)
24 # define PATH_SBIN_BIN_NULSTR(x) PATH_NORMAL_SBIN_BIN_NULSTR(x)
27 #define DEFAULT_PATH_NORMAL PATH_SBIN_BIN("/usr/local/") ":" PATH_SBIN_BIN("/usr/")
28 #define DEFAULT_PATH_NORMAL_NULSTR PATH_SBIN_BIN_NULSTR("/usr/local/") PATH_SBIN_BIN_NULSTR("/usr/")
29 #define DEFAULT_PATH_SPLIT_USR DEFAULT_PATH_NORMAL ":" PATH_SBIN_BIN("/")
30 #define DEFAULT_PATH_SPLIT_USR_NULSTR DEFAULT_PATH_NORMAL_NULSTR PATH_SBIN_BIN_NULSTR("/")
31 #define DEFAULT_PATH_COMPAT PATH_SPLIT_SBIN_BIN("/usr/local/") ":" PATH_SPLIT_SBIN_BIN("/usr/") ":" PATH_SPLIT_SBIN_BIN("/")
34 # define DEFAULT_PATH DEFAULT_PATH_SPLIT_USR
35 # define DEFAULT_PATH_NULSTR DEFAULT_PATH_SPLIT_USR_NULSTR
37 # define DEFAULT_PATH DEFAULT_PATH_NORMAL
38 # define DEFAULT_PATH_NULSTR DEFAULT_PATH_NORMAL_NULSTR
41 #ifndef DEFAULT_USER_PATH
42 # define DEFAULT_USER_PATH DEFAULT_PATH
45 bool is_path(const char *p
) _pure_
;
46 int path_split_and_make_absolute(const char *p
, char ***ret
);
47 bool path_is_absolute(const char *p
) _pure_
;
48 char* path_make_absolute(const char *p
, const char *prefix
);
49 int safe_getcwd(char **ret
);
50 int path_make_absolute_cwd(const char *p
, char **ret
);
51 int path_make_relative(const char *from_dir
, const char *to_path
, char **_r
);
52 char* path_startswith(const char *path
, const char *prefix
) _pure_
;
53 int path_compare(const char *a
, const char *b
) _pure_
;
54 bool path_equal(const char *a
, const char *b
) _pure_
;
55 bool path_equal_or_files_same(const char *a
, const char *b
, int flags
);
56 char* path_join_internal(const char *first
, ...);
57 #define path_join(x, ...) path_join_internal(x, __VA_ARGS__, (const char*) -1)
59 char* path_simplify(char *path
, bool kill_dots
);
62 PATH_CHECK_FATAL
= 1 << 0, /* If not set, then error message is appended with 'ignoring'. */
63 PATH_CHECK_ABSOLUTE
= 1 << 1,
64 PATH_CHECK_RELATIVE
= 1 << 2,
67 int path_simplify_and_warn(char *path
, unsigned flag
, const char *unit
, const char *filename
, unsigned line
, const char *lvalue
);
69 static inline bool path_equal_ptr(const char *a
, const char *b
) {
70 return !!a
== !!b
&& (!a
|| path_equal(a
, b
));
73 /* Note: the search terminates on the first NULL item. */
74 #define PATH_IN_SET(p, ...) path_strv_contains(STRV_MAKE(__VA_ARGS__), p)
76 char* path_startswith_strv(const char *p
, char **set
);
77 #define PATH_STARTSWITH_SET(p, ...) path_startswith_strv(p, STRV_MAKE(__VA_ARGS__))
79 int path_strv_make_absolute_cwd(char **l
);
80 char** path_strv_resolve(char **l
, const char *root
);
81 char** path_strv_resolve_uniq(char **l
, const char *root
);
83 int find_binary(const char *name
, char **filename
);
85 bool paths_check_timestamp(const char* const* paths
, usec_t
*paths_ts_usec
, bool update
);
87 int fsck_exists(const char *fstype
);
88 int mkfs_exists(const char *fstype
);
90 /* Iterates through the path prefixes of the specified path, going up
91 * the tree, to root. Also returns "" (and not "/"!) for the root
92 * directory. Excludes the specified directory itself */
93 #define PATH_FOREACH_PREFIX(prefix, path) \
94 for (char *_slash = ({ \
95 path_simplify(strcpy(prefix, path), false); \
96 streq(prefix, "/") ? NULL : strrchr(prefix, '/'); \
98 _slash && ((*_slash = 0), true); \
99 _slash = strrchr((prefix), '/'))
101 /* Same as PATH_FOREACH_PREFIX but also includes the specified path itself */
102 #define PATH_FOREACH_PREFIX_MORE(prefix, path) \
103 for (char *_slash = ({ \
104 path_simplify(strcpy(prefix, path), false); \
105 if (streq(prefix, "/")) \
107 strrchr(prefix, 0); \
109 _slash && ((*_slash = 0), true); \
110 _slash = strrchr((prefix), '/'))
112 /* Similar to path_join(), but only works for two components, and only the first one may be NULL and returns
113 * an alloca() buffer, or possibly a const pointer into the path parameter. */
114 #define prefix_roota(root, path) \
116 const char* _path = (path), *_root = (root), *_ret; \
119 while (_path[0] == '/' && _path[1] == '/') \
121 if (isempty(_root)) \
124 _l = strlen(_root) + 1 + strlen(_path) + 1; \
125 _n = newa(char, _l); \
126 _p = stpcpy(_n, _root); \
127 while (_p > _n && _p[-1] == '/') \
129 if (_path[0] != '/') \
137 int parse_path_argument_and_warn(const char *path
, bool suppress_root
, char **arg
);
139 char* dirname_malloc(const char *path
);
140 const char *last_path_component(const char *path
);
141 int path_extract_filename(const char *p
, char **ret
);
143 bool filename_is_valid(const char *p
) _pure_
;
144 bool path_is_valid(const char *p
) _pure_
;
145 bool path_is_normalized(const char *p
) _pure_
;
147 char *file_in_same_dir(const char *path
, const char *filename
);
149 bool hidden_or_backup_file(const char *filename
) _pure_
;
151 bool is_device_path(const char *path
);
153 bool valid_device_node_path(const char *path
);
154 bool valid_device_allow_pattern(const char *path
);
156 int systemd_installation_has_version(const char *root
, unsigned minimal_version
);
158 bool dot_or_dot_dot(const char *path
);
160 static inline const char *skip_dev_prefix(const char *p
) {
163 /* Drop any /dev prefix if there is any */
165 e
= path_startswith(p
, "/dev/");
170 bool empty_or_root(const char *root
);
171 static inline const char *empty_to_root(const char *path
) {
172 return isempty(path
) ? "/" : path
;
175 bool path_strv_contains(char **l
, const char *path
);
176 bool prefixed_path_strv_contains(char **l
, const char *path
);